2020 材料科学与工程专业英语(常州大学) 最新满分章节测试答案

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本课程起止时间为:2020-03-16到2020-07-07
本篇答案更新状态:已完结

第二章 Atomic Structure and Interatomic Bonding 第二章单元测试

1、 问题:按照下面电子层的排列顺序，电子的能量逐渐升高。
选项：
A:L、M、K、N、O
B:M、N、K、L、O
C:K、L、M、N、O
D:O、N、M、L、K
答案: 【K、L、M、N、O】

2、 问题:核外电子排布的轨道能量，下面错误的是？
选项：
A:2s<3s
B:3d<4s
C:3d<4d
D:3s<3p
答案: 【3d<4s】

3、 问题:Which of the following is wrong?
选项：
A:Covalent bond is a kind of chemical bond formed between atoms by sharing electron pairs.
B:Ionic bond is formed between anions and cations by electrostatic action.
C:Metallic bond is the strong interaction force between metal ions relying on free electrons.
D:Covalent bonds exist in NaCl.
答案: 【Covalent bonds exist in NaCl.】

4、 问题:What are the characteristics of the same main group in the periodic table?
选项：
A:The outermost layers have the same number of electron.
B:They have the similar chemical properties.
C:The number of electron layers from top to bottom gradually increases.
D:The atomic radius from top to bottom gradually increases.
答案: 【The outermost layers have the same number of electron.;
They have the similar chemical properties.;
The number of electron layers from top to bottom gradually increases. ;
The atomic radius from top to bottom gradually increases.】

5、 问题:Which of the following elements are alkali metals?
选项：
A:K
B:Na
C:Cs
D:In
答案: 【K;
Na;
Cs 】

6、 问题:Electrons in atoms would follow these principles.
选项：
A:Pauli exclusion
B:lowest energy
C:Hund rule
D:Hooke law
答案: 【Pauli exclusion;
lowest energy;
Hund rule】

7、 问题:Which of the following bonds can be treated as weak bonds or secondary bonds?
选项：
A:dipole–dipole interactions
B:the London dispersion force
C:hydrogen bonding
D:metallic bonding
答案: 【dipole–dipole interactions;
the London dispersion force;
hydrogen bonding 】

8、 问题:Atoms are made from a nucleus of protons and neutrons and a cloud of electrons.
选项：
A:正确
B:错误
答案: 【正确】

9、 问题:The Pauli exclusion principle is the quantum mechanical principle which states that two or more identical fermions (particles with half-integer spin) can occupy the same quantum state within a quantum system simultaneously.
选项：
A:正确
B:错误
答案: 【错误】

10、 问题:When voltage is applied to an ionic material, entire ions must move to cause a current to flow, therefore, the electrical conductivity is very good.
选项：
A:正确
B:错误
答案: 【错误】

第三章 The Structure of Crystalline Solids 第三章单元测试

1、 问题:What is the coordination number for FCC structure?
选项：
A:6
B:8
C:10
D:12
答案: 【12】

2、 问题:How many atoms in HCP?
选项：
A:6
B:8
C:10
D:12
答案: 【6】

3、 问题:A future important property of （ ） bonds is hybridization of the atomic orbitals, leading to variation of the valency of a given element in various compound.
选项：
A:hydrogen
B:covalent
C:ionic
D:metallic
答案: 【covalent】

4、 问题:Which of the following statement is correct?
选项：
A:面心立方的金属塑性优于体心立方的金属塑性。
B:体心立方的金属塑性优于密排六方的金属塑性。
C:密排六方的金属塑性优于体心立方的金属塑性。
D:面心立方的金属塑性优于密排六方的金属塑性。
答案: 【面心立方的金属塑性优于体心立方的金属塑性。;
体心立方的金属塑性优于密排六方的金属塑性。;
面心立方的金属塑性优于密排六方的金属塑性。】

5、 问题:The APF could not be same due to different crystal structure.
选项：
A:正确
B:错误
答案: 【正确】

6、 问题:There are cations and anions in ceramics, therefore, the crystal could not be electrically neutral.
选项：
A:正确
B:错误
答案: 【错误】

7、 问题:The chemical formula of a compound indicates the ratio of cations to anions, which must be stoichiometric.
选项：
A:正确
B:错误
答案: 【错误】

8、 问题:In ionic crystals, many of the valence electrons are present in states where they are not localized close to the atoms but can move freely over the crystal, which is reflected in a high conductivity.
选项：
A:正确
B:错误
答案: 【错误】

9、 问题:Non-crystal cannot be called amorphous.
选项：
A:正确
B:错误
答案: 【错误】

10、 问题:The cohesive forces in ionic crystals are electrostatic forces acting between the ions.
选项：
A:正确
B:错误
答案: 【正确】

第四章 Defects 第四章单元测验

1、 问题:Which of the following statement is incorrect?
选项：
A:点缺陷与材料的电学性质、光学性质、材料的高温动力学过程有关。
B:通常把晶体点阵结构中周期性势场的畸变称为晶体的结构缺陷。
C:点缺陷的类型只包括空位和填隙原子。
D:正常节点没有被原子或离子所占据成为空节点，称为空位。
答案: 【点缺陷的类型只包括空位和填隙原子。】

2、 问题:Which of the following statement about Frankel’s defect is incorrect？
选项：
A:空位、填隙原子成对出现，两者数量相等。
B:晶体的体积发生改变。
C:不需要自由表面。
D:正负离子半径相差大时，易形成Frenkel缺陷。
答案: 【晶体的体积发生改变。】

3、 问题:空位平衡浓度与哪些因素有关？
选项：
A:the total number of atomic sites
B:Boltzmann’s constant
C:the absolute temperature in Kelvins
D:the energy required for the formation of a vacancy
答案: 【the total number of atomic sites;
Boltzmann’s constant;
the absolute temperature in Kelvins;
the energy required for the formation of a vacancy】

4、 问题:Which of the following statements about solid solutions are correct.
选项：
A:固溶体是指溶质原子溶入溶剂晶格中而仍保持溶剂类型的合金相。